WEEK OF APRIL 16th, 2012 ALL UNIT CIRCULAR 180 ALL BORO CIRCULAR – 2/2011 PART III – SAFETY BULLETIN #85 – (Gypsum Roof Decking) FFP – TAXPAYER FIRES INSTRUCTOR: BC Dave Simms Flashcards
ALL UNIT CIRCULAR 180 ALL BORO CIRCULAR – 2/2011 PART III – SAFETY BULLETIN #85 – (Gypsum Roof Decking) FFP – TAXPAYER FIRES
1.
Following a thaw after a heavy snowstorm, Lt. Costanza’s unit responded to numerous manhole and transformer emergencies throughout the upper west side of Manhattan. From the signals he transmitted, which one was incorrect? (1.1)
a.
10-25 code 1. Manhole fire has extended from a conduit into a building
b.
10-25 code 2. Smoke under pressure from one manhole, and has blown the cover off another
c.
10-25 code 3. Smoke is seeping from a transformer vault
d.
10-25 no code. A civilian stated there was loud bang from a manhole. There is no visible condition at the present time.
- C
2. A lieutenant operating at a smoke condition in a manhole would be correct to expect the utility company to immediately dispatch an emergency crew upon the transmittal of which code or codes? (1.3) a. 10-25 code 1 only b. 10-25 code 1 and code 2 c. 10-25 code 4 only d. 10-25 codes 1 and code 4
- D
3.
While operating at a 10-25 code 3, a ladder company Captain had his unit perform the following actions. Which one was not entirely correct? (2.1, 2.2, 2.4, 2.5)
a.
The area was taped off, marking the danger area to civilians and FD personnel. Apparatus were kept clear of the area in a safe location
b.
Electrical services in surrounding buildings were inspected. Carbon monoxide readings were monitored.
c.
A vehicle on top of the manhole was moved by a member at the request its civilian owner
d.
Precautionary hose lines were ordered stretched as necessary
- C
4.
You are a Battalion Chief operating with a full assignment at a manhole emergency. It is your determination that this incident is well within the capability of a single unit. You decide to leave one engine company at the scene. Proper procedures for this situation are found in all but which choice? (2.6)
a.
The unit may respond to all alarms leaving one member at the scene
b.
The unit shall return to quarters leaving one member at the scene. Battalion Chiefs shall provide relief for the member.
c.
When a member is left at the scene, the company officer shall at frequent intervals contact the dispatcher for re-notification of the utility company
d.
If it is decided not to leave a unit at the scene, all units may be placed in service and the manhole protected with traffic cones and tape
- B
C. When a member is left at the scene, the company officer shall at frequent intervals
contact the dispatcher for re-notification of the utility company.
5.
You are a operating with your unit at an alarm for an odor of gas from a manhole. Due to a fourth alarm in your borough, you are the only unit on the scene. There is a strong odor of natural gas emanating from a sewer manhole in the intersection near your apparatus. You order the round cover of the manhole removed by two members of your unit utilizing manhole hooks. Your actions at this incident were: (2.9, TB Emergencies 2 pg. 15)
a.
Incorrect mainly because removal of a sewer manhole cover can only be performed with the approval of an on scene Chief officer
b.
Correct, if removing the manhole cover will possibly alleviate a potentially explosive situation
c.
Incorrect. Only square manhole covers may be removed by fire department members
d.
Incorrect, under no circumstances are any manhole covers to be removed by FDNY personnel
- A
6.
Engine Company 13 is operating at a fire in an electrical manhole. The fire is exposing on a vehicle parked approximately 3 feet from the manhole. There is no chief officer on the scene and the utility company has given a 30 minute ETA. They performed the following actions. In which one should they be corrected? (2.4)
a.
A hoseline was stretched and kept outside of the taped off danger area.
b.
The handline was carefully operated to protect the automobile, insuring that no water entered the manhole
c.
Upon the arrival and request of the utility company, the handline was operated into the manhole by having water flow into the manhole from the street.
d.
A solid stream tip was utilized to reduce and prevent any shock hazard
- D
7.
Four firefighters desiring to become lieutenants were discussing FDNY procedures for fires/emergencies in transformer vaults. These students would be correct to believe: (3, 3.1, 3.2, 3.3)
a.
The greatest hazard encountered at fires/emergencies in transformer vaults is the amount of toxic PCB’s contained within.
b.
Full use of personal protective equipment and SCBA is mandatory, even in a light smoke condition
c.
The New York City Fire Department considers only those transformers with greater than 49 ppm (parts per million) to be PCB transformers
d.
Sub surface transformers convert primary voltage (27,000 volts) to secondary voltage (120 volts). Although both are dangerous only the primary voltage can cause fatal injury.
- B
The transformers convert primary voltage (27,000 Volts) to secondary voltage
(120 Volts) for use by CON EDISON customers. Either of these voltages can
cause fatal injury if not handled properly.
8.
An engine and ladder company arrive together at a below grade transformer emergency in Greenwich Village. There is a heavy smoke condition from an open transformer vault in the street and witnesses are informing you, the Ladder Company Captain that there may be a civilian in the transformer vault itself. In this situation you would be incorrect to believe? (Ref. #1 2.3, 2.4, 2.5 AUC 266 6.4.2)
a.
No member is to enter the vault until Con Edison has made an examination
b.
The Incident Commander will make the determination that the vault is safe for entry by FD personnel
c.
When authorization is given to enter the vault a cursory search of the vault shall be performed
d.
Deactivation of transformers shall be performed only by Con Edison personnel or engineering personnel familiar with the procedure. No member of this department shall attempt deactivation by direction or upon instruction of engineering personnel
- B
9.
Con Edison has installed a dedicated telephone number for use by Chief Officers to call the Shift manager at the Borough Electric Control Centers in certain situations. A Chief Officer should not however, make a phone call to the Con Edison Shift manager at the Electrical Control Center at which type of incident? (Add. 1 2.1, 4.1)
a.
Heavy smoke from an electrical manhole, dangerously high levels of CO in surrounding occupancies
b.
Transformer vault fire, fire conditions much more sever than originally reported
c.
Fire inside an unmanned Con Edison Substation
d.
Manhole fire, additional manholes showing signs of activity
- C
1.
The FDNY has adapted a Modified Response Policy in order to increase responder and civilian safety by reducing accident exposure while still providing a high level of service to the public. In regard to the Modified Response Program, it would be correct to state: (2.1, 2.2, 4.2)
a.
It is in use in all boroughs except Manhattan
b.
A lieutenant can cancel a modified response
c.
When responding in 10-20 response mode units are to observe all traffic regulations. No warning devices other than emergency lights are to be used.
d.
In quarters housing an engine and ladder company, when responding together, both units shall respond in emergency mode if assigned first due to a BARS alarm
- B
Note:
When a single unit responding to a Group 1 call type receives additional information, or
the dispatcher fills out assignment, the officer or assigned battalion chief may direct an
emergency response, if warranted. Dispatcher shall announce that the 10-20 response is
cancelled and that all units shall respond in the emergency mode
2. The modified response Program classifies alarms as either Group 1 or Group 2. An example of a Group 1 alarm can be found in choice: (2.1) a. Class 3 all hours b. ERS no contact from 2300 – 0800 c. Class J from 0700 – 1900 d. Manhole emergencies
- B
3. As per the modified response program, the only alarm which all units assigned may respond in emergency mode can be found in which choice? (2.2) a. Sprinkler activation b. Odor of smoke c. BARS alarms d. Class J 1900 – 0700 Box assignment
- B
4. Which of the following responses should be conducted as a modified response? (2.1) a. Lock in with food on the stove b. Tree down on a car c. ERS no contact at 1400 hours d. Salvage truck to a 10-75
- D
1.
Gypsum roof decking systems are commonly found supported by trusses of wood or metal. From a firefighting operational standpoint, the main drawback of a gypsum roof deck is: (3.2)
a.
Its vulnerability to moisture
b.
Its truss support system
c.
It is an unstable platform prone to early collapse
d.
Its heavy weight (gypsum plank approx. 135 lbs but may vary, gypsum concrete approx. 17.5 lbs. per sq.ft.)
- A
2.
You are a lieutenant in an engine company. Your unit is performing afternoon BISP in a taxpayer building. The building has a roof which is comprised of gypsum concrete supported by unprotected lightweight open web steel joists. In regard to this building, it would be incorrect to state which of the following?
a.
This roof shall not be cut
b.
Members should not be committed to roof operations
c.
An exterior attack is to be utilized
d.
A watertight roofing material is applied to the gypsum concrete after it sets
- C
3.
You are the roof firefighter cutting a roof at a one story commercial building. As you make the initial cut, you notice a white powdery residue being thrown from the saw blade. In this situation you would be correct if you were to: (3.2.4)
a.
Make an immediate notification to your company officer and proceed to evacuate the roof
b.
Notify your company officer and operate from an area of safety
c.
Continue cutting the roof until the vent hole is completed and pushed down, then proceed to abandon the roof
d.
Notify the Incident Commander immediately and evacuate the roof
- D
1.
From the following taxpayer related definitions, choose the one that is not correct. (Glossary)
a.
A parapet is that portion of a wall which continues above the roof line.
b.
A marquee is a permanent hood which projects over an entrance to a building and is supported by neither posts nor columns
c.
Corbelling is a course of brick built out from the face of a wall, as steps in reverse
d.
Cantilevered structural members are vertical and supported on two ends
- D
2.
The term taxpayer is not defined or recognized in the building code. It is commonly taken to mean a business structure of one or two stories in height of Class 3 construction. In regard to taxpayer type buildings, it would be incorrect to state: (2.1, 2.2)
a.
The term originally referred to the practice of real estate investors, who while holding land for speculation, resorted to minimal investment in construction to produce income and offset the cost of taxes
b.
Their areas may vary from 20’ x 50’ to areas of whole city blocks
c.
Taxpayer type buildings were usually constructed with cheap flimsy construction and little or no fire retarding features
d.
These buildings are usually multi structures built side by side with substantial fire resistive partitions and fire stopping in the cockloft
- D
3.
There are three broad categories of taxpayers. From the three, choose the statement that contains incorrect information. (2.3, 3.13)
a.
The older type of taxpayer was built from the turn of the century until the 1920’s. Features of this type of taxpayer may include tin ceilings nailed directly to the beams or furring strips, decorative metal cornices through which fire can spread, and wooden beams girders and columns.
b.
The most prevalent type, built from the 1920’s into the 1960’s. Usually larger than the old style taxpayers, they may contain supermarkets, bowling alleys and restaurants. In most cases, removing the cornice or sign will not provide access to the cockloft.
c.
The newer type of taxpayers built since the 1960’s contain the same type of occupancies with similar structural features. The difference in these buildings is the use of larger wooden structural members to support the floor and roof.
d.
The newer type of construction is much better than the traditional or older type from a fire protection standpoint.
- C
3.13 NEW TYPE CONSTRUCTION
3.13.1 The new type of construction (supermarkets, etc.) is much better than the
traditional or older type from a fire protection view point.
3.13.2 Many of the newer type taxpayers are built on a concrete slab foundation, which
removes a major problem of cellar and basement fires. The partition walls are
usually better constructed due to the use of the steel and aluminum stud system
which employs gypsum blocks and sheathing as a bearing or nonbearing wall
system.
3.13.3 The roof system will remain a major fire fighting factor because, for the most
part, the roofs are constructed of “Bar Joists,” light weight steel or flat wood
trusses. These features, and how they behave under fire conditions, have been
covered under “Truss Roofs,” Section 3.3.3. (See Figs. 5 & 10).
4.
The officer of Ladder Company 173 is operating at a restaurant fire in a taxpayer. CIDS information has informed the officer that the occupancy that his unit is operating in has a mezzanine. Concerning the mezzanine, the officer should consider all of the following with which exception? (2.4)
a.
Access to the mezzanine is generally via a small wooden stair or ladder. Very seldom will there be another means of access.
b.
The height of the ceilings in the mezzanine and the area below is generally above average
c.
The majority of mezzanines will not be enclosed and there will be a railing at the edge
d.
Mezzanines can be found in all areas of the building (front, rear, sides). Many were added after the original construction date and may be constructed of lighter load bearing components
- B
5. While on BISP, a firefighter under your command has asked you whether the taxpayer building your unit is inspecting is required to have sprinkler protection. The building card you are holding states that the building was erected under the 1968 building code. You told the firefighter that the sprinkler protection is required if the building exceeds how many square feet? (2.5.1) a. 7,500 b. 6,500 c. 5,000 d. 1,000
- A
Rules for sprinkler protection:
1938 Code Area exceeding 10,000 square feet.
1968 Code Area exceeding 7,500 square feet.
2008 Code-Group M-Mercantile FULL BUILDING-Area exceeding 12,000
square feet OR the combined area on all
floors including mezzanines exceeds 24,000
square feet. (BC 903.2.6)
Storage of merchandise is in high-piled racks
or rack storage arrays (BC 903.2.6.1)
OCCUPANCY WITHIN BUILDING-Area
exceeding 7,500 square feet OR area of any
size is located 3 stories above grade OR area
of any size is located in a High Rise building
OR area of any size contains an unenclosed
stair or escalator connecting two or more
floors. (BC 903.2.6.2
6. Firefighters in a study group from the borough of Brooklyn were studying the construction features of taxpayer buildings. They would be correct to believe that the most common type of roof on taxpayers can be found in which choice? (3.3.1) a. The inverted, raised or reversed roof b. Wood joists covered with either tongue and groove boards or plywood c. Bowstring truss d. Unprotected open web steel joists roof
- B
7.
Many taxpayers built both past and present utilize truss construction to support the roof. Trusses are used where large areas free of roof support columns are desired. A Captain ordered by the Incident Commander to supervise roof operations at a taxpayer fire would know which piece of information to be incorrect? (3.3.3)
a.
All trusses are comprised of two major members called chords (top and bottom) and webs. The webs tie the top chord to the bottom chord.
b.
Because of the redundancy built into the truss by the webs, the failure of smaller truss elements will not cause a complete failure of the entire truss.
c.
The wooden bow string truss is easily recognizable by its characteristic hump like profile. The longer the span, the higher the bow.
d.
Steel open web joists found in modern construction have no fire resistance rating and may collapse after only 5 or 10 minutes.
- B
8.
Exterior bearing walls in taxpayers are constructed of brick, stone, concrete block and mortar. Differential thermal expansion may cause these walls to bulge. Other correct statements concerning taxpayer walls can be found in all but which choice? (3.4)
a.
Brick walls usually crumble or break as they fall, but large sections can be projected a good distance due to the impact as the wall hits the ground
b.
The parapet walls are required to be supported laterally if they extend for long distances above two or more stores. They also receive support at the ends where they tie into crosswalls
c.
The stability of masonry walls is very much dependent on the integrity of the roof, which acts as a monolithic brace which ties the walls together. In effect the roof is holding up the walls by supplying lateral support
d.
Stone or brick walls may spall due to heat or subsequent stream application, thereby reducing the effective load bearing area of the wall
- B